#2D289B#2D289B

#2D289B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.1% C 0.178 H 275.2°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#2D289B
RGB	rgb(45, 40, 155)
HSL	hsl(243, 59%, 38%)
HSV	hsv(243, 74%, 61%)
CMYK	cmyk(71%, 74.2%, 0%, 39.2%)
CIE-LAB	lab(25.08, 39.80, -61.38)
CIE-LCH	lch(25.08, 73.15, 302.96°)
OKLab	oklab(37.11% 0.0162 -0.1774)
OKLCH	oklch(37.11% 0.178 275.2)
XYZ	xyz(7.7554, 4.4413, 31.4525)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2D289B #969B28

analogous

#285C9B #2D289B #66289B

triadic

#2D289B #9B2D28 #289B2D

tetradic

#2D289B #9B285C #969B28 #289B66

square

#2D289B #9B285C #969B28 #289B66

split-complementary

#2D289B #9B6628 #5C9B28

monochromatic

#110F3A #1F1B6A #2D289B #3C35CB #6B66D7

Accessibility & contrast

On white

11.12

#2D289B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#2D289B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2D289B

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2D289B	#FFFFFF	#000000	##FFFFFF
##2D289B	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419E

Deuteranopia (green-blind)

#003699

Tritanopia (blue-blind)

#00495F

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2d289b;
/* rgb */ color: rgb(45, 40, 155);
/* oklch */ color: oklch(37.1% 0.178 275.2);

Tailwind

colors: {
  custom: {
    50: '#7763ba',
    500: '#2d289b',
    950: '#000000',
  },
}

SCSS

$custom: #2d289b;
$custom-light: #7763ba;
$custom-dark: #000000;

JSON

{
  "hex": "#2d289b",
  "rgb": {
    "r": 45,
    "g": 40,
    "b": 155
  },
  "hsl": {
    "h": 242.609,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.37115,
    "c": 0.17819,
    "h": 275.2
  },
  "luminance": 0.04442
}

Semantic roles & 50–950 ramp

primary

#2D289B

secondary

#B9BD61

accent

#E246DB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #2D289B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →